Abstract
In this paper, two alternative integrated power systems were considered: one based on photovoltaic and hydrogen technology (electrolyzer coupled with a fuel cell), the other based on photovoltaic and batteries. The two systems, designed for off-grid applications, were sized for a photovoltaic energy production in the area of Turin, Italy, to provide 3 kW maximum power, with an average daily consumption of 10.25 kWh. The systems were compared from a technical and economical point of view and a Life Cycle Assessment analysis (LCA) was performed, to identify the main contributors to the environmental impact of the systems.From a commercial point of view, fuel cell and the electrolyzer are niche products, so the hydrogen-based power system results to be more expensive with respect to Li-ion batteries. From the environmental point of view, however, LCA results show the lower burdens of the hydrogen technology.
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